5305-01-721-8409

Find complete technical information, availability, and procurement data for: 5305-01-721-8409
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-721-8409

Item Name Code

18257

Assigment Date

07/01/2024 (2 years ago)

A circular shaped item with an aperture manufactured to predetermined dimensions, constructed with a rectangular cross section that may be solid, with joint, or in a helical form that facilitates spiral wrap installation. It prevents seal extrusion under pressure and is designed to fit on the down-pressure side of a gland groove with a packing, preformed or o-ring.

right-hand thread direction, 22.0 millimeters nominal thread length, 40.0 millimeters nominal fastener length, 6g thread class, hexagon extended washer head style

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 6g
Thread Direction: right-hand
Thread Length: 22.0 millimeters nominal
Fastener Length: 40.0 millimeters nominal
Head Style: hexagon extended washer
Head Height: 8.50 millimeters maximum
Width Between Flats: 9.64 millimeters minimum and 10.00 millimeters maximum
Extended Washer Diameter: 17.00 millimeters maximum
Extended Washer Thickness: 1.20 millimeters minimum
End Item Identification: 2355-016690331
Nominal Thread Diameter: 8.0 millimeters
Thread Pitch In Millimeters: 1.25
Part Name Assigned By Controlling Agency: screws, hex, flange 2-1 (metric)
Material: steel property class 10.9 overall
Material Document And Classification: sae j1199 property class 10.9 international std/spec single material response overall
Surface Treatment: zinc nickel overall
Surface Treatment Document And Classification: mil-prf-32647, zn-ni alloy, hexavalent chromium free, type k16 mil spec single treatment response overall
Thread Series Designator: m
Specification/Standard Data: 05047-asme b18.24-2023 professional/industrial association standard

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
AES10M08B040WB9QX1	Hexagon Head Cap Screw

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5305-01-721-8409?

The FSCG of the NSN 5305-01-721-8409 is 5305

Does the NSN 5305-01-721-8409 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-721-8409 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5305-01-721-8409 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-721-8409 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5305-01-721-8409 was assigned to the Federal Catalog?

It was assigned 2 years ago, on Mon, Jul 1, 2024